noun Etymology: obsolete ~ animal with green or young horns Date: 1682 an inexperienced or naive person, a newcomer (as to a country) unacquainted with local manners and customs
GREENHORN
Meaning of GREENHORN in English
Merriam Webster. Explanatory English dictionary Merriam Webster. Толковый словарь английского языка Мерриам-Уэбстер. 2012